android中 MediaStore提取縮略圖和原始圖像?.

歡迎轉(zhuǎn)載：http://blog.csdn.net/djy1992/article/details/10005767

提取圖像的Thumbnail

1)

??? 啟動Intent

??????? Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);

??????? intent.setType("image/*");

??????? intent.putExtra("return-data", true);

??????? startActivityForResult(intent, REQUEST_CODE_PHOTO_PICKED);

??????? 在 onActivityResult 中
??????? protected void onActivityResult(int requestCode, int resultCode, Intent data) {
??????????? if (resultCode != RESULT_OK) {

??????????????? return;

??????????? }

??????????? Bitmap bitmap = null;

??????????? ContentResolver resolver = getContentResolver();

??????????? if (requestCode == REQUEST_CODE_PHOTO_PICKED) {

??????????????? final Bundle extras = data.getExtras();

??????????????? if (extras != null)

??????????????????? bitmap = extras.getParcelable("data");

??????????? }

??????? }

??????? 經(jīng)過閱讀android源代碼發(fā)現(xiàn)，此方法返回的data 必須小于100k

2)???

??????? 啟動Intent

??????? Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);

??????? intent.setType("image/*");

??????? startActivityForResult(intent, REQUEST_CODE_PHOTO_PICKED);

??????? 在 onActivityResult 中
??????? protected void onActivityResult(int requestCode, int resultCode, Intent data) {
??????????? if (resultCode != RESULT_OK) {

??????????????? return;

??????????? }

??????????? Bitmap bitmap = null;

??????????? ContentResolver resolver = getContentResolver();

??????????? if (requestCode == REQUEST_CODE_PHOTO_PICKED) {

???????????????? try {??
??????????? Uri originalUri = data.getData();

??????????? Uri thumb = Uri.withAppendedPath(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI,??????????????? originalUri.getLastPathSegment());

??????????? bitmap = MediaStore.Images.Media.getBitmap(resolver, thumb);

??????? } catch (IOException e) {

??????? }

??????????? }

??????? }

提取圖像原數(shù)據(jù)

??????? 啟動Intent

??????? Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);

??????? intent.setType("image/*");

??????? startActivityForResult(intent, REQUEST_CODE_PHOTO_PICKED);

??????? 在 onActivityResult 中
??????? protected void onActivityResult(int requestCode, int resultCode, Intent data) {
??????????? if (resultCode != RESULT_OK) {

??????????????? return;

??????????? }

??????????? Bitmap bitmap = null;

??????????? ContentResolver resolver = getContentResolver();

??????????? if (requestCode == REQUEST_CODE_PHOTO_PICKED) {

??????? try {

??????????????????? Uri originalUri = data.getData();

??????????? bitmap = MediaStore.Images.Media.getBitmap(resolver, originalUri );

??????? } catch (IOException e) {

??????? }

??????????? }

??????? }

轉(zhuǎn)載于:https://www.cnblogs.com/wuwa/p/6191583.html

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